1. Enzymes & Chemical Reactions
HOW FAST DOES YOUR BODY HAVE TO WORK TO STAY ALIVE?

2. Chemical Reactions in Your Body Have to Be Fast!

3. Factors Contributing to Fast Reactions
Concentration of reactants
Temperature PH
Enzymes present to act as a catalyst

4. Enzymes
Most factors within cells aren’t good for biochemical reactions
So they need a catalyst
Protein catalysts are called enzymes
They make a reaction happen faster with less energy

5. Enzymes Cont…..
They are not used up in the reactions, they may be used over and over again.
Unlike other catalysts, enzymes are usually highly specific for particular chemical reactions. They generally catalyze only one or a few types of reactions.
They can catalyze up to several million reactions per second that would normally take days

6. Conditions
Some enzymes work best at acidic pHs, while others work best in neutral environments.
Enzymes need constant temperature